Telephone-transmitter.



G. R. ROGERS.

TELEPHONE TRANSMITTER.

APPLICATION FILED JAH.28. 1910.

Patented Apr. 4', 1911.

lgl.

w A Home WITNESSES necessary to speak directly into them. 1nvent1on obviates these disadvantages,

vent-ion, 1 ,denotes the UNITED STATES PaaTENT ()FFICE.

CHARLES RUSSELL ROGERS, OF WAVERLY, NEW YORK.

TELEPHONE-TRANSMITTER.

Specification of Letters Patent.

Application file'd January 28, 1910. Serial No. 540,631.

atcnte(l Apr. 4. 1911.

To all whom it may concern:

Be it known that I, Cnannns R. Roonus, a citizen of the United States, residing at averly, in the county of Tioga and State of New York, have invented certain new and useful Improvements in Telephone- Transmitters, of which the following is a specification.

My invention relates more particularly to transmitters of the type known as the solid-back transmitter, such as is employed in the ordinary desk or wall.

telephone. In general, this type of transrilit-ter has been provided! with a .rubber mouth-piece which is screwed into a cap that is detachably secured to the shell that forms the base or back of the transmitter. This mouth-piece is of much smaller diameter than the back, or base. As these mouthpieces are constructed of rubber, or glass, they are subject to destruction; and as they are of comparatively small diameter it is My for in it the mouth-piece proper, the flaring member that receives the voice, is seated ,within a casing that protects it against injury; and this mouth-piece is practically as large as the base of the transmitter now in use, thereby providing a large area for the reception of the voice.

The invention embodies further, an improvement in means for antisepticizing transmitters.

The invention will first be described with reference to the accompanying drawing and then more particularly pointed out in the appended claims.

In the drawings-Figure 1 is a perspective View of a portiyn of a desk phone embodying the invention. Fig. 2 is a vertical section taken axially'through Fig. .1. Fig. 3 is a perspective view of the receptacle'for the antiseptic. Fig. 4 is a perspective view of the antiseptic in the form of a solid. Fig. 5 shows the adaptation of the invention to a transmitter having a base of different form from that shown in Figs. 1 and 2. Fig. 6 illustrates onemethod of securing the mouth-piece to the member 1. In the illustrated embodiment of the inupper end of the post orstandard of a desk telephone, to which is pivoted the shallow cup-shaped metal shell 2 which forms the usual base or back of the type of transmitter illustrated. Within the open mouth of the base 2 is inserted the axial flange of a hollow member 3 which is secured to the base 9 by means of screws 4. The member 3 formed with an inwardly projecting radial flange 5 and with an annular axial wall or rim (3, the diameter of the outer end of which is substantially the same as that of the base 2.

7 denotes the mouthpiece proper which is a shell of some light material, preferably rubber. The n'iouth-piecc is dish-like in form, that is. it is a conical shell which converges from its mouth or open end inwardly and is closed at its contracted end by a transverse wall which is perforated as at S to permit the pass-tree oi the sound waves to the diaphragm. ,The mouth -piece 7 fits within the rim 6, the open end of the former facing outwardly to receive the voice and its wall adjacent said open end fitting snugly within the rim 6 to which it is secured by screws 9, or by other suitable means, as for example by a screw-tln'ead engagcmcntof the mouth piece 7 with the member 3 as shown in Fig. 6. it will be seen therefore that the larger end of the mouth-piece has a diameter that is substantially as large as the diameter of the base or back of the transmitter now in use.

The convergence of the mouth-piece 7 leaves an annular chamber between its outer surface and the inner surface of the rim 6. \Vithin this chamber is disposed a receptacle 10 for holding an antiseptic. The receptacle shown is in the form of an opcn-mouthed can. the base of which is provided with a central aperture 11 and with a plurality of perforations 12 which extend over approximately one half of the area of the base. The wall of the receptacle 10, over approximately one half its area, is provided with perforations 13. The antiseptic shown is in the form' of an annular ring-like cake 14 which is hollowed out conically to fit around the outer conical surface of the mouth-piece 7. This cake of antiseptic is retained in holes 12 and'13 may be covercd on the inside of the receptacle with a cloth or porous sheet 10 retaining any sediment caused by vaporation. The number and area of the holes l2l and 12-3 may be as desired. The aperture 11 of the receptacle is sufficiently large to inelude all of the apertures 8 of the mouth-pime; therefore neither the antisep' tic nor its receptacle otters any obstruction to the passage of sound waves to the diaphragm. In use the receptacle 10 may be disposcil in the chamber formed between the mouth-piece 7 and the rim (3 so that the perforations 12 and 13 of the receptacle may he'in either the upper part or lower part of the chamber.

The radial flange 5 of the member 3 pro vides a convenient abutment for the usual diaphragm 1G; .and the base 2 accommodates as heretofore the usual elements that are associated with the diaphragm.

In Fig. 5 is shown the adaptation of the invention to a form of base that diflers from that shown in Figs. 1 and 2. vIn the form illustrated in Fig.5, the member 3 is dis; pensed with and the mouthpiece inserted within and secured to the detachable section 2 of the base or back of the transmitter.

The. invention, it will be seen, provides a mouthpiece that substantially as large as the base of the transmitter now in use; and. as itthus gives a larger area for the voice than such smaller mouth-pieces, it accepts the voice more completely rendering it nnnecessary to speak directly into the mouthpiece. I

As the member 3 or section 2 forms a surroimding metal casing for the mouthpiece 7, the latter is protected against injury; and is rcmlered substantially as durable as the transmitter: and as it is simply inserted in the rim (3, or wall of section ano held therein by the screws 9, the cutting of screw-threads around the base of the mouth-piece as I'Qtltlllfitl in the forms heretofore referred to is eliminated.

-'.lhc means provided for antisepticizing the transmitte' are exceedingly simple, are located inside of the transmitter where the antiseptic is enabled to thoroughly antisepti cize the transmitter, the mouthpiece being antisepticized through the perforations 8.

-Thus protection against the connnunication of disease germs is secured. As no elongation of the transmitter is required to provide accommodation. for the antiseptic means, the distance between the diaphragm and the voice is not increased by the introduction of the antiseptic. The latter being preferably in a solid or cake-like folm, the possibility of a liquid antiseptic getting where not desired is thus avoided. It will of c'o'ursc he understood that the shape or form of the antiseptic can be as desired; a powder antiseptic contained in a. cloth or other material being a convenient form.

' said rim.

Having described my invention, what I claim, is

1. In a device of the character described, the combination with a shell forming the base or back, of a member removably secured to said base, and formed with an out-.

standing rim the diameter of the outer end of which is approximately equal to that of the base, said member having anaperture for the passage of sound waves, and a separable month-piece in the form of a conical shell having its contracted end closed by a perforated wall, said mouth-piece being fitted and secured within the rim of said removablemember to be surrounded and protected thereby. v

2. In a device of the character described the combination with a shell formingthe base or back, of a member removably secured to saidbase and formed with a flange to fit within the base and with an inwardly projecting annular flange adapted to provide an abutment for adiaphragm and formed also with an outstanding axial rim or flange, and a removable mouth-piece formed of a conical shell having its inner end closed by a perforated transverse wall,

said mouth-piece fitting within and'sun' 4. In a transmitter, a wall or rim forming a chamber that communicates with the diaphragm. a mouth-piece located within said wall to leave a space between the' two, and an antiseptic disposed within said chamber and on the outer surface of said mouthpiece adjacent its end nearer In a transmitter, the combination with a. base provided with a wall or rim, of conically shaped shell forming a mouthpiece fitted within said rim, a can-like receptacle secured to the mouth-piece to surround its outer surface adjacent its contracted end, said receptacle having an aperture for the passage of sound waves, and having also apertures for the escape of the antiseptic emanations, and an antiseptic within said receptacle.

6. In a transmitter, a mouthpiece located the diaphragm.

' wam a inouth-piece, said receptacle having perforatic contained within said receptacle, and a 10 tlons in its upper part. a porous sheet covering the perforations of the,

7. In a transmitter, a mouth-piece located receptacle. within the transmitter and formed to leave In testimony whereof I aflix my signature, a space between it and the surrounding wall in presence of two witnesses of the transmitter, a receptacle surrounding CHARLES RUSSELL ROGERS. a portion of said mouth-piece and locate Witnesses: V between it and the. Wallof the transmitter F. M. SEELY,

and provided with perforations, an antisep- J. F. DROBUYK. 

